<template>
  <div class="todo-footer" v-show="counter.all">
    <label>
      <!-- <input type="checkbox" @change="doneAllHandler" :checked="isAllDone" /> -->
      <input type="checkbox" v-model="isAllDone" />
    </label>
    <span>
      <span>已完成{{ counter.done }}</span> / 全部{{ counter.all }}
    </span>
    <button class="btn btn-danger" @click="removeDoneHandler">
      清除已完成任务
    </button>
  </div>
</template>

<script>
export default {
  name: "Footer",
  props: ["counter"],
  computed: {
    isAllDone: {
      get() {
        return this.counter.all && this.counter.done === this.counter.all;
      },
      set(v) {
        this.$emit("done-all", v);
      },
    },
  },
  methods: {
    // doneAllHandler(e) {
    //   this.doneAllItem(e.target.checked);
    // },
    removeDoneHandler() {
      if (!this.counter.done) {
        alert("没有已完成的任务");
        return;
      }
      if (window.confirm("确定清除？")) {
        this.$emit("remove-done");
      }
    },
  },
};
</script>

<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>
